Data Structures Questions and Answers for Technical Interviews

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Question: What is almost complete binary tree?.

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Answer:An
almost complete binary tree is a tree in which each nodethat has a
right child also has a left child. Having a left child does not
require a node to have a right child. Stated alternately, an
almost complete binary tree is a tree where for a right child,
there is always a left child, but for a left child there may not
be a right child.The number of nodes in a binary tree can be found
using this formula: n = 2^h Where n is the amount of nodes in the
tree, and h is the height of the tree.

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